Valve-spring lifter.



W. S. THOMSON.

VALVE SPRING LIFTER APPLICATION FILED FEB. 4. 1915.

LMSMWQ I Patented Oct, 16,1917.

i the tension of the spring 13 on the valve TTNTTED STATEg PATEN T @T TT@E.

WILLIAM S. THOMSON, 0F PLANTSVILLE, CONNECTICUT, ASSIGNOR TO THE E. D. SMITH & COMPANY, OF PLANTSVILLE, CONNECTICUT, A CORPORATION.

VALVE-SPRING LIFTER.

Specification of Letters Patent.

Patented Oct. 16, 1917..

Application filed February 4, 1915. Serial No. 6,070.

construction and convenience and efficiency in use.

In the accompanying drawing Figure 1 is a side elevation of my valve spring litter and a valve and spring with which the same is engaged.

Fig. 2 is a similar view on an enlarged scale of part of the bar and adjacent parts.

Fig. 3 is a plan view of the same.

My valve spring lifter comprises a valve engaging-member 10 at the upper end, a chain 11 extending downwardly therefrom, a bar 12, and means for connecting the chain 11 and bar 12, and serves to relieve stem 14- of the valve 16 so that the supporting pin 15 may be removed.

The valve engaging member 10 is of U- shape, comprising a pair of downwardly eX- tending arms, the inner arm 17 being suitable for engaging with the upper part of the valve 16 and the outer arm 18 being con nected by its lower end. with the upper end of the chain 11.

The bar 12 conforms in its general structural features to that shown in the design patent to Lucius V. VValkley, No. 44,327,

July 8, 1913, comprising a handle 19 at one end having wooden handle scales, a bit end 20 formed with a fork, suitable for receiving the valve stem 14 in the slot and engaging by the lateral members with the lower end of the spring 13 either directly or by means of the spring supporting plate or washer 21.

The body portion of the bar 12 is of L form, comprising a pair of lateral members 22 and a web-portion 23 bridging the space between them.

The web-portion 23 is provided with a hole 21 of sufficient size to permit the passage of the chain 11 therethrough.

The chain 11 passes through the hole 24 and has at the lower end a terminal ring 25 on which is mounted a hook 26.

The hook 26 is hooked in one of the links of the chain 11 according to the length of chain desired and in the operation of my device the said hook engages with the lower side of the web-portion 23.

In operating my device, as shownin Fig. 1, pressing downwardly on the handle 19 serves to compress the spring 13, relieving the pressure thereof from the supporting pin 15, thus permittingthe said pin to be removed from the stem 14%, and finally. permitting the removal of the spring.

The use of the hook 26 for the means for interconnecting the chain and the bar is positive in effect and permits of a positive adjustment of a single setting for a plurality of valves of the same construction.

That is to say, the device may be ad justed for one particular style of valve construction and can be laid aside with the posi tive assurance that it is always properly adjusted for that particular style of valve.

I prefer as shown to have two holes 2 1 in the web portion 23 in longitudinal alinement and an appreciable distance apart, so

that the leverage efiect of the bar 12 may be changed by shifting the chain 11 from one hole 2a to the other.

I claim as my invention In combination in a valve spring lifter, a bar that serves as an operating lever, a valve engaging member provided with a chain, the body portion of the said bar hav ing hole for receiving the said chain, and a hook connected to the free end of-the said chain, suitable for being hooked into the links of the said chain and bridging the walls of the said hole for operatively connecting the said valve engaging member with the said bar.

WILLIAM S. THOMSON.

Witnesses:

E. H. GALPIN, G. R. Bonn.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, I). G. 

